In Greek mythology, what structure was built to imprison the Minotaur?

In Greek mythology, the Labyrinth was built to imprison the Minotaur.

King Minos ordered Daedalus to design the Labyrinth after Pasiphae gave birth to the hybrid creature. Its confusing passages made it difficult for anyone inside to find the exit. The structure was intended to hide the Minotaur from the people of Crete and to prevent the creature from escaping.

Theseus entered the Labyrinth as part of his mission to end the Athenian tribute. Ariadne’s thread allowed him to retrace his route after killing the Minotaur. The story is the foundation of the modern use of “labyrinth” for a complicated network of paths.

A labyrinth and a maze are often treated as synonyms today, but some modern writers distinguish a labyrinth as a single winding route and a maze as a puzzle with choices and dead ends. Ancient Greek myth does not require that later distinction; its Labyrinth is a legendary, confusing enclosure associated with Minos.